Preparation method and system for cylinder body and cylinder cover of aluminum alloy oil cylinder

Abstract

The invention relates to the technical field of cylinder body and cylinder cover manufacturing, in particular to a manufacturing method and system for an aluminum alloy oil cylinder body and cylinder cover, and the manufacturing method comprises the steps that a test oil cylinder mold set is manufactured, a test quenching parameter set and a center index parameter set are obtained, step quenching is conducted on the test oil cylinder mold set on the basis of the test quenching parameter set, and a test oil cylinder set is obtained; performing quality detection on each test oil cylinder in the test oil cylinder group to obtain a test oil cylinder quality group, constructing a test oil cylinder data group based on the center index parameter set, the test oil cylinder quality group and the test quenching parameter group, and performing quenching parameter optimization according to the test oil cylinder data group to obtain an optimal quenching parameter group; and according to the optimal quenching parameter set, step quenching is conducted on the pre-obtained original mold, and the target oil cylinder is obtained. The intelligent degree of the oil cylinder preparation process can be improved, and the stability of the cylinder body and the cylinder cover of the oil cylinder is improved.

Description

Technical Field

[0001] This invention relates to the field of cylinder block and cylinder head manufacturing technology, and in particular to a method and system for manufacturing an aluminum alloy hydraulic cylinder block and cylinder head. Background Technology

[0002] As a key power transmission component in many mechanical equipment and engineering devices, the dimensional accuracy, mechanical properties, and corrosion resistance of the cylinder body and cylinder head directly affect the operating efficiency, reliability, and safety of the entire equipment. In industries such as aerospace, engineering machinery, and automobile manufacturing, even minor dimensional deviations or performance deficiencies of hydraulic cylinders can lead to equipment failures or even safety accidents. Therefore, high-precision and high-performance manufacturing methods are required to ensure the quality of hydraulic cylinders.

[0003] Traditional techniques typically involve using fixed quenching parameters to process molds and prepare aluminum alloy cylinder bodies and heads. While this method can achieve basic manufacturing functions and meet general usage requirements, the fixed quenching parameters cannot be optimized and adjusted according to different mold sizes and material properties. This results in significant differences in the dimensional stability and mechanical properties of the prepared cylinders. Furthermore, the lack of intelligent control over the quenching process makes it easy to generate thermal and structural stresses during quenching, affecting the quality and performance of the cylinders. Summary of the Invention

[0004] This invention provides a method and system for manufacturing an aluminum alloy hydraulic cylinder body and cylinder head, the main purpose of which is to improve the intelligence level of the hydraulic cylinder manufacturing process and enhance the stability of the hydraulic cylinder body and cylinder head.

[0005] To achieve the above objectives, the present invention provides a method for manufacturing an aluminum alloy hydraulic cylinder block and cylinder head, comprising: Receive the hydraulic cylinder preparation instruction and determine the mold size parameter set based on the hydraulic cylinder preparation instruction; Based on the mold size parameter set, prepare the test hydraulic cylinder mold set, and obtain the test quenching parameter set and the central index parameter set. Among them, the test hydraulic cylinder molds in the test hydraulic cylinder mold set are all the same. Based on the experimental quenching parameter set, the experimental cylinder mold set is subjected to graded quenching to obtain the experimental cylinder set. The experimental quenching parameter set in the experimental quenching parameter set corresponds one-to-one with the experimental cylinder mold in the experimental cylinder mold set. Each test cylinder in the test cylinder group is subjected to quality inspection to obtain the test cylinder quality group; The test cylinder data set is constructed based on the central index parameter set, the test cylinder quality set, and the test quenching parameter set. Based on the experimental cylinder data set, the quenching parameters were optimized to obtain the optimal quenching parameter set, which includes: optimal preheating temperature, optimal preheating time, optimal austenite temperature, optimal austenite holding time, optimal quenching temperature, and optimal quenching holding time. The original mold is subjected to graded quenching according to the optimal quenching parameter set to obtain the target hydraulic cylinder, which includes: target cylinder body and target cylinder head; Based on the target hydraulic cylinder, the aluminum alloy hydraulic cylinder body and cylinder head were fabricated.

[0006] Optionally, obtaining the test quenching parameter set and the central index parameter set includes: Set a set of quenching indices, which includes multiple quenching indices, and the quenching indices are preheating temperature indices, preheating time indices, austenite temperature indices, austenite holding time indices, quenching temperature indices, or quenching holding time indices. Quenching indices are extracted sequentially from the set of quenching indices, and an index range is constructed based on the quenching indices. The central index parameter of the index range is then determined. The index range is divided according to the preset number of tests to obtain a candidate quenching parameter group; The candidate quenching parameter groups and the central index parameters are summarized respectively to obtain the candidate quenching parameter group set and the central index parameter set; The candidate quenching parameter set is assigned parameters to obtain the test quenching parameter set. The test quenching parameter set includes multiple test quenching parameter sets, and each test quenching parameter set includes multiple candidate quenching parameters. The candidate quenching parameters correspond one-to-one with the quenching indices in the quenching index set.

[0007] Optionally, the step of performing graded quenching on the test cylinder mold group based on the test quenching parameter set to obtain the test cylinder group includes: The first hydraulic cylinder mold is extracted from the test hydraulic cylinder mold group, and the first quenching parameter group is extracted from the test quenching parameter group. The first quenching parameter group includes: test preheating temperature, test preheating time, test austenite temperature, test austenite holding time, test quenching temperature and test quenching holding time. Based on the first set of quenching parameters, the first cylinder mold is subjected to graded quenching to obtain the test cylinder; The first hydraulic cylinder mold is removed from the test hydraulic cylinder mold set to obtain the removed hydraulic cylinder mold set. The first quenching parameter set is removed from the test quenching parameter set to obtain the removed quenching parameter set. The rejected cylinder mold set and the rejected quenching parameter set are respectively used as the test cylinder mold set and the test quenching parameter set, and the step of extracting the first cylinder mold in the test cylinder mold set is returned until the rejected cylinder mold set or the rejected quenching parameter set is empty. By combining the tested hydraulic cylinders, a set of tested hydraulic cylinders is obtained.

[0008] Optionally, the step of performing graded quenching on the first cylinder mold according to the first quenching parameter set to obtain the test cylinder includes: Based on the test preheating temperature and test preheating time in the first quenching parameter group, and using the pre-constructed preheating furnace to preheat the first cylinder mold, a preheated cylinder mold is obtained. Based on the test quenching temperature in the first quenching parameter group, the pre-acquired original graded quenching medium is heated to obtain the target graded quenching medium. The preheated cylinder mold is transferred to the pre-constructed quenching furnace to obtain the initial quenching mold. The quenching furnace is heated, and the real-time quenching temperature of the initial quenching mold is monitored. Once the real-time quenching temperature reaches the test austenite temperature in the first quenching parameter group, the initial quenching mold is kept warm based on the test austenite holding time in the first quenching parameter group to obtain the austenite cylinder mold. The austenitic cylinder mold is transferred to the target graded quenching medium, and the austenitic cylinder mold is kept at a constant temperature based on the target graded quenching medium and the test quenching holding time in the first and second quenching parameter group to obtain the quenched cylinder mold. The quenched oil cylinder mold was cooled to obtain the test oil cylinder.

[0009] Optionally, the quality inspection of each test cylinder in the test cylinder group to obtain the test cylinder quality group includes: The test cylinders were extracted sequentially from the test cylinder group; The test cylinder was subjected to quality analysis to obtain a set of cylinder quality parameters, which included: cylinder tensile strength, cylinder corrosion resistance, and cylinder dimensional qualification values. The hydraulic cylinder mass is evaluated based on the hydraulic cylinder mass parameter set to obtain the test hydraulic cylinder mass, which is between 0 and 1. The mass of the test cylinders is summarized to obtain the mass group of the test cylinders.

[0010] Optionally, the construction of the test cylinder data set based on the central index parameter set, the test cylinder quality set, and the test quenching parameter set includes: Extract the mass of the test cylinders sequentially from the test cylinder mass group, and identify the target test cylinder corresponding to the mass of the test cylinder. The target quenching parameter set corresponding to the target test cylinder is determined in the test quenching parameter set set; The target quenching parameter set is normalized using the central index parameter set to obtain the normalized quenching parameter set, and the experimental quenching vector is constructed based on the normalized quenching parameter set. The test quenching vector and the test cylinder mass are paired by key values ​​to obtain the test cylinder data; The test cylinder data is summarized to obtain the test cylinder data set.

[0011] Optionally, the step of optimizing the quenching parameters based on the test cylinder data set to obtain the optimal quenching parameter set includes: The pre-constructed particle swarm is initialized based on the experimental cylinder data set to obtain an initial particle swarm, which includes multiple particles, and the position of each particle corresponds to the experimental quenching vector in the experimental cylinder data. The optimal population position is obtained by iterating using the initial particle swarm, and the optimal quenching vector is determined based on the optimal population position. Based on the optimal quenching vector and the set of central index parameters, the optimal quenching parameter set is calculated.

[0012] Optionally, the initialization of the pre-constructed particle swarm based on the experimental cylinder data set to obtain an initial particle swarm includes: Construct particle constraints, which include multiple index ranges; Particles are extracted sequentially from the particle swarm, and their initial positions and velocities are generated based on the particle constraints. Identify the initial quenching vector corresponding to the initial position; Based on the initial quenching vector and the test cylinder data set, the cylinder quality is predicted, and the predicted cylinder quality is obtained. Identify the duration parameter group in the initial quenching vector, and set the efficiency suppression value according to the duration parameter group. The efficiency suppression value is the sum of all duration parameters in the duration parameter group. Calculate the initial fitness based on the efficiency suppression value and the predicted cylinder mass; Based on the initial position, initial velocity, and initial fitness, initial particles are generated, and the initial particles are aggregated to obtain the initial particle swarm.

[0013] Optionally, the step of predicting the cylinder mass based on the initial quenching vector and the test cylinder data set to obtain the predicted cylinder mass includes: Extract the test cylinder data sequentially from the test cylinder data group, and calculate the test quality weight based on the test quenching vector and the initial quenching vector in the test cylinder data. The test quality weights corresponding to the test cylinder data in the test cylinder data group are summarized to obtain the test quality weight reorganization; Based on the weighted reorganization of test quality and the test cylinder data set, the predicted cylinder quality is calculated.

[0014] To achieve the above objectives, the present invention also provides a manufacturing system for an aluminum alloy hydraulic cylinder block and cylinder head, comprising: The quenching parameter acquisition module is used to receive the cylinder preparation instruction, determine the mold size parameter set based on the cylinder preparation instruction, prepare the test cylinder mold set according to the mold size parameter set, and acquire the test quenching parameter set and the central index parameter set. Among them, the test cylinder molds in the test cylinder mold set are all the same. The hydraulic cylinder quality inspection module is used to perform graded quenching on the test hydraulic cylinder mold group based on the test quenching parameter set to obtain the test hydraulic cylinder group. The test quenching parameter set in the test quenching parameter set corresponds one-to-one with the test hydraulic cylinder mold in the test hydraulic cylinder mold group. The quality inspection is performed on each test hydraulic cylinder in the test hydraulic cylinder group to obtain the test hydraulic cylinder quality group. The optimal parameter optimization module is used to construct a test cylinder data set based on the central index parameter set, the test cylinder mass set, and the test quenching parameter set. Based on the test cylinder data set, the quenching parameters are optimized to obtain the optimal quenching parameter set. The optimal quenching parameter set includes: optimal preheating temperature, optimal preheating time, optimal austenite temperature, optimal austenite holding time, optimal quenching temperature, and optimal quenching holding time. The target cylinder preparation module is used to perform graded quenching on the pre-acquired original mold according to the optimal quenching parameter set to obtain the target cylinder, wherein the target cylinder includes: target cylinder body and target cylinder head.

[0015] To address the above problems, the present invention also provides an electronic device, the electronic device comprising: Memory, storing at least one instruction; and The processor executes the instructions stored in the memory to implement the above-described method for preparing the aluminum alloy cylinder block and cylinder head.

[0016] To address the aforementioned problems, the present invention also provides a computer-readable storage medium storing at least one instruction, which is executed by a processor in an electronic device to implement the above-described method for preparing an aluminum alloy hydraulic cylinder block and cylinder head.

[0017] To address the problems described in the background section, this invention first obtains a set of experimental quenching parameters and a set of core index parameters. This provides rich and systematic foundational data for subsequent optimization and selection of quenching parameters, facilitating in-depth research into the influence of different quenching parameters on cylinder performance. Next, based on the experimental quenching parameter set, the experimental cylinder mold group undergoes graded quenching to obtain an experimental cylinder group. This step, through graded quenching of the experimental cylinder molds, simulates the quenching process in actual production. The application of different quenching parameter sets yields experimental cylinders with varying performance, providing diverse samples for studying the relationship between quenching parameters and cylinder quality. This helps in discovering the optimal combination of quenching process parameters, thereby improving the dimensional stability and mechanical properties of the cylinder. Furthermore, each experimental cylinder in the experimental cylinder group undergoes quality testing to obtain an experimental cylinder quality group. This step quantitatively evaluates the quality of each experimental cylinder by testing indicators such as tensile strength, corrosion resistance, and dimensional compliance. This provides precise data support for subsequent analysis of the impact of quenching parameters on cylinder quality. Then, based on the central index parameter set, the experimental cylinder quality set, and the experimental quenching parameter set, an experimental cylinder data set is constructed. This step integrates the quenching parameters with the corresponding quality inspection results to form a systematic experimental cylinder data set. This not only facilitates unified management and analysis of experimental data but also provides a standardized and effective data foundation for subsequent optimization of quenching parameters using optimization algorithms, improving data usability and the reliability of the optimization process. Finally, based on the experimental cylinder data set, quenching parameters are optimized to obtain the optimal quenching parameter set. This step, through intelligent optimization methods such as particle swarm optimization, can efficiently search for the optimal combination of quenching parameters from a large amount of experimental data. The optimized quenching parameters can ensure optimal cylinder quality while reasonably controlling the total time of staged quenching, further improving the intelligence of cylinder manufacturing and effectively enhancing production efficiency and product quality. Therefore, this invention can improve the intelligence level of the cylinder manufacturing process and enhance the stability of the cylinder body and cylinder head. Attached Figure Description

[0018] Figure 1 This is a schematic flowchart illustrating a method for preparing an aluminum alloy hydraulic cylinder body and cylinder head according to an embodiment of the present invention. Figure 2 This is a functional block diagram of a manufacturing system for an aluminum alloy hydraulic cylinder body and cylinder head according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of an electronic device for implementing the method of preparing the aluminum alloy cylinder block and cylinder head according to an embodiment of the present invention.

[0019] Explanation of reference numerals in the attached figures: Electronic equipment; 10. Processor; 11. Memory; 12. Bus; 100. Aluminum alloy hydraulic cylinder body and cylinder head preparation system; 101. Quenching parameter acquisition module; 102. Hydraulic cylinder quality inspection module; 103. Optimal parameter optimization module; 104. Target hydraulic cylinder preparation module.

[0020] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0022] This application provides a method for manufacturing an aluminum alloy hydraulic cylinder block and cylinder head. The execution subject of this method includes, but is not limited to, at least one of the following electronic devices 1, such as a server or a terminal, that can be configured to execute the method provided in this application. In other words, the method for manufacturing the aluminum alloy hydraulic cylinder block and cylinder head can be executed by software or hardware installed on a terminal device or a server device, and the software can be a blockchain platform. The server includes, but is not limited to, a single server, a server cluster, a cloud server, or a cloud server cluster.

[0023] Reference Figure 1 The diagram shown is a flowchart illustrating a method for manufacturing an aluminum alloy hydraulic cylinder block and cylinder head according to an embodiment of the present invention. In this embodiment, the method for manufacturing the aluminum alloy hydraulic cylinder block and cylinder head includes: S1. Receive the hydraulic cylinder preparation instruction and determine the mold size parameter group based on the hydraulic cylinder preparation instruction.

[0024] Understandably, the cylinder manufacturing instruction refers to a human-initiated instruction to manufacture a specific cylinder, and the mold size parameter set refers to the combination of dimensions required for the specific cylinder specified in the cylinder body manufacturing instruction. The mold size parameter set includes information such as the dimensions of the specific cylinder. The mold for the specific cylinder can be manufactured using the mold size parameter set. The mold size parameter set includes: cylinder inner diameter, cylinder height, wall thickness, and sealing groove dimensions, etc.

[0025] S2. Based on the mold size parameter set, prepare the test cylinder mold set, and obtain the test quenching parameter set and the central index parameter set. The test cylinder molds in the test cylinder mold set are all the same.

[0026] It is understood that the test cylinder mold group includes multiple test cylinder molds. The test cylinder mold refers to the mold of a specific cylinder obtained after preliminary preparation, and the material for preparing the test cylinder mold is aluminum alloy. The initial preparation refers to processing the pre-obtained material according to the mold size parameter group and through machining (such as turning, milling, grinding, etc.) to obtain the test cylinder mold. The combination of size parameters of the test cylinder mold is the same as the mold size parameter group. In addition, after processing, the processed mold needs to be pre-treated, such as annealing the processed mold to eliminate internal stress and improve processing performance, and cleaning the surface of the processed mold to ensure that there are no impurities such as oil stains and rust.

[0027] It should be explained that the test quenching parameter set includes multiple test quenching parameter sets, wherein the test quenching parameter set refers to the combination of temperature and duration parameters required in the subsequent graded quenching steps. The central index parameter set includes multiple central index parameters, and the central index parameters refer to the reference values ​​of temperature or duration required in the subsequent graded quenching steps.

[0028] Specifically, obtaining the set of test quenching parameters and the set of central index parameters includes: Set a set of quenching indices, which includes multiple quenching indices, and the quenching indices are preheating temperature indices, preheating time indices, austenite temperature indices, austenite holding time indices, quenching temperature indices, or quenching holding time indices. Quenching indices are extracted sequentially from the set of quenching indices, and an index range is constructed based on the quenching indices. The central index parameter of the index range is then determined. The index range is divided according to the preset number of tests to obtain a candidate quenching parameter group; The candidate quenching parameter groups and the central index parameters are summarized respectively to obtain the candidate quenching parameter group set and the central index parameter set; The candidate quenching parameter set is assigned parameters to obtain the test quenching parameter set. The test quenching parameter set includes multiple test quenching parameter sets, and each test quenching parameter set includes multiple candidate quenching parameters. The candidate quenching parameters correspond one-to-one with the quenching indices in the quenching index set.

[0029] It is understood that the quenching index set includes multiple quenching indices, and these indices refer to the indices that need to be controlled during the graded quenching process. This quenching index set includes: preheating temperature index, preheating time index, austenite temperature index, austenite holding time index, quenching temperature index, and quenching holding time index. The process of graded quenching of the mold is as follows: First, the mold is preheated. This preheating step is to uniformize the internal temperature gradient of the mold and reduce thermal stress during subsequent heating. Next, the preheated mold is heated until its temperature reaches the austenite temperature. The purpose of this heating step is to completely austenitize the mold material and obtain a uniform austenitic structure. Finally, the preheated mold is quenched. This quenching step is to achieve the transformation of austenite to martensite under a controllable cooling rate, avoiding deformation and cracking of the mold.

[0030] Furthermore, in conjunction with the graded quenching process, the preheating temperature index and preheating time index refer to the temperature and duration that need to be controlled in the preheating step, respectively; the austenite temperature index and austenite holding time index refer to the temperature and duration that need to be controlled in the heating process, respectively; and the quenching temperature index and quenching holding time index refer to the temperature and duration that need to be controlled in the quenching step, respectively.

[0031] It should be explained that the central index parameter refers to the median value within the aforementioned index range. The central index parameter can be calculated as: Central index parameter = (Maximum value in the index range + Minimum value in the index range) / 2. The number of tests refers to a manually set constant, which is the number of candidate quenching parameters in the candidate quenching parameter group. The candidate quenching parameter group includes multiple candidate quenching parameters, where each candidate quenching parameter refers to a value within the index range obtained after segmentation. Segmenting the index range according to the preset number of tests means dividing the index range into equal parts. Each segmentation index range, among which... The number of tests is represented by the number of tests, and the length of each segmentation index range is the same. Then, the median of the segmentation index range is calculated and recorded as the candidate quenching parameter. The candidate quenching parameters corresponding to each segmentation index range are summarized to obtain the candidate quenching parameter group.

[0032] Understandably, the parameter allocation for the candidate quenching parameter set refers to the following: if the candidate quenching parameter set consists of b candidate quenching parameter groups, then the candidate quenching parameters in the same candidate quenching parameter group represent the same quenching index. The quenching index is extracted sequentially from the quenching index set. Then, in each of the b candidate quenching parameter groups, the test quenching parameters corresponding to that quenching index are extracted sequentially, resulting in b test quenching parameters. These b test quenching parameters are used as the test quenching parameter group. For example, if a quenching index is the preheating temperature index, then the candidate quenching parameters corresponding to the preheating temperature index are extracted sequentially from the b candidate quenching parameter groups (the candidate quenching parameters corresponding to the preheating temperature index are recorded as test quenching parameters), respectively: 700 710 ... 800 The experimental quenching parameter set is: (700 710 , ..., 800 Finally, the test quenching parameter set corresponding to each quenching index in the quenching index set is summarized to obtain the test quenching parameter set.

[0033] S3. Based on the set of test quenching parameters, the test cylinder mold group is subjected to graded quenching to obtain the test cylinder group. The test quenching parameter group in the set of test quenching parameters corresponds one-to-one with the test cylinder mold in the test cylinder mold group.

[0034] Understandably, the test cylinder group includes multiple test cylinders, and the test cylinders are test cylinder molds after being graded quenched according to the test quenching parameter group. Graded quenching refers to a heat treatment process that divides the quenching process into three stages: austenitizing holding, medium quenching, and cooling, and precisely controls the temperature and duration of each stage. This solution, by introducing graded quenching, can significantly reduce the thermal stress and structural stress during the mold quenching process, and improve the dimensional stability and mechanical properties of the cylinder.

[0035] Specifically, the step of performing graded quenching on the test cylinder mold group based on the test quenching parameter set to obtain the test cylinder group includes: The first hydraulic cylinder mold is extracted from the test hydraulic cylinder mold group, and the first quenching parameter group is extracted from the test quenching parameter group. The first quenching parameter group includes: test preheating temperature, test preheating time, test austenite temperature, test austenite holding time, test quenching temperature and test quenching holding time. Based on the first set of quenching parameters, the first cylinder mold is subjected to graded quenching to obtain the test cylinder; The first hydraulic cylinder mold is removed from the test hydraulic cylinder mold set to obtain the removed hydraulic cylinder mold set. The first quenching parameter set is removed from the test quenching parameter set to obtain the removed quenching parameter set. The rejected cylinder mold set and the rejected quenching parameter set are respectively used as the test cylinder mold set and the test quenching parameter set, and the step of extracting the first cylinder mold in the test cylinder mold set is returned until the rejected cylinder mold set or the rejected quenching parameter set is empty. By combining the tested hydraulic cylinders, a set of tested hydraulic cylinders is obtained.

[0036] It is clear that the "first hydraulic cylinder mold" refers to the first hydraulic cylinder mold in the test hydraulic cylinder mold group. The "first quenching parameter group" refers to the first quenching parameter group in the test quenching parameter group set. The "rejected hydraulic cylinder mold group" refers to the test hydraulic cylinder mold group after removing the first hydraulic cylinder mold. The "rejected quenching parameter group set" refers to the test quenching parameter group set after removing the first quenching parameter group.

[0037] Specifically, the step of performing graded quenching on the first-stage hydraulic cylinder mold according to the first-stage quenching parameter set to obtain the test hydraulic cylinder includes: Based on the test preheating temperature and test preheating time in the first quenching parameter group, and using the pre-constructed preheating furnace to preheat the first cylinder mold, a preheated cylinder mold is obtained. Based on the test quenching temperature in the first quenching parameter group, the pre-acquired original graded quenching medium is heated to obtain the target graded quenching medium. The preheated cylinder mold is transferred to the pre-constructed quenching furnace to obtain the initial quenching mold. The quenching furnace is heated, and the real-time quenching temperature of the initial quenching mold is monitored. Once the real-time quenching temperature reaches the test austenite temperature in the first quenching parameter group, the initial quenching mold is kept warm based on the test austenite holding time in the first quenching parameter group to obtain the austenite cylinder mold. The austenitic cylinder mold is transferred to the target graded quenching medium, and the austenitic cylinder mold is kept at a constant temperature based on the target graded quenching medium and the test quenching holding time in the first and second quenching parameter group to obtain the quenched cylinder mold. The quenched oil cylinder mold was cooled to obtain the test oil cylinder.

[0038] Understandably, the preheating furnace refers to industrial heating equipment used for low-temperature preheating of the test mold, such as a box-type resistance furnace or a gas-fired preheating furnace. The purpose of introducing this preheating furnace is to reduce the thermal stress generated in the mold during the quenching heating process. The preheated cylinder mold refers to the first cylinder mold after preheating. Preheating refers to placing the first cylinder mold in the preheating furnace for heat preservation. The temperature of the preheating furnace is the test preheating temperature, and the heat preservation time is the test preheating time. The original graded quenching medium refers to a liquid cooling medium that can work stably at high temperatures, such as using a nitrate bath as the original graded quenching medium. The target graded quenching medium refers to the original graded quenching medium at the test quenching temperature. The function of the target graded quenching medium is to enable the mold to cool slowly within a predetermined temperature range and suppress the martensite transformation rate. The quenching furnace refers to a high-precision temperature-controlled device used to heat the mold to the austenitizing temperature, such as a salt bath furnace or a controlled atmosphere furnace. The function of this quenching furnace is to heat the initial quenching mold to the test austenite temperature. The initial quenching mold refers to the preheating cylinder mold placed in the quenching furnace. The test austenite temperature represents the temperature at which the initial quenching mold transforms into austenite. The austenitic cylinder mold refers to a mold whose internal structure has completely transformed into uniform austenite after austenitizing heat treatment. The quenching cylinder mold refers to the austenitic cylinder mold after heat treatment with the target graded quenching medium.

[0039] Furthermore, the cooling process refers to placing the quenching cylinder mold in the air for cooling until the temperature of the quenching cylinder mold reaches room temperature, and the austenitic cylinder mold that reaches room temperature is recorded as the test cylinder.

[0040] S4. Perform quality inspection on each test cylinder in the test cylinder group to obtain the test cylinder quality group.

[0041] It should be explained that the test cylinder mass group includes multiple test cylinder masses, and each test cylinder mass corresponds to one test cylinder in the test cylinder group. The test cylinder mass refers to a numerical value that quantifies the product quality of the test cylinder. The larger the test cylinder mass, the higher the quality of the test cylinder prepared according to the first set of quenching parameters.

[0042] Specifically, the quality inspection of each test cylinder in the test cylinder group is performed to obtain the test cylinder quality group, including: The test cylinders were extracted sequentially from the test cylinder group; The test cylinder was subjected to quality analysis to obtain a set of cylinder quality parameters, which included: cylinder tensile strength, cylinder corrosion resistance, and cylinder dimensional qualification values. The hydraulic cylinder mass is evaluated based on the hydraulic cylinder mass parameter set to obtain the test hydraulic cylinder mass, which is between 0 and 1. The mass of the test cylinders is summarized to obtain the mass group of the test cylinders.

[0043] It is clear that the cylinder mass parameter group refers to the combination of parameters that quantify the mass of the test cylinder. Among them, the cylinder tensile strength refers to the numerical value of the tensile capacity of the test cylinder. The method for obtaining the cylinder tensile strength is to conduct a tensile test on the test cylinder using a tensile testing machine and record the real-time tensile force of the tensile testing machine in real time. This real-time tensile force refers to the tensile force experienced by the test cylinder. When the test cylinder deforms, the real-time tensile force is recorded as the cylinder tensile strength. The cylinder corrosion resistance strength refers to the numerical value of the corrosion resistance of the test cylinder. The method for obtaining the corrosion resistance strength is to place the test cylinder under specified test conditions, such as salt spray test, electrochemical corrosion test, etc. When the corrosion depth on the surface of the test cylinder reaches a preset limit value (e.g., 1 mm), the test duration is recorded, and the test duration is recorded as the cylinder corrosion resistance strength. The cylinder size qualification value refers to the numerical value that quantifies the degree of conformity between the test cylinder size and the mold size parameter set. The cylinder size qualification value is obtained by: measuring the size of the test cylinder according to the mold size parameter set to obtain the test size parameter set; then calculating the similarity between the mold size parameter set and the test size parameter set (converting both the mold size parameter set and the test size parameter set into vectors, and recording the cosine value between the two vectors as the similarity); and using this similarity as the cylinder size qualification value.

[0044] Understandably, the mass of the test cylinder is calculated as follows: ; in, Indicates the mass of the test cylinder. This indicates the number of cylinder mass parameters in the cylinder mass parameter group. This indicates the first parameter in the hydraulic cylinder mass parameter group. Hydraulic cylinder mass parameters Indicates the first The reference mass parameter corresponds to the mass parameter of each hydraulic cylinder. The reference mass parameter is a constant set by the user, which represents the minimum mass of the corresponding hydraulic cylinder.

[0045] S5. Construct the test cylinder data set based on the central index parameter set, the test cylinder quality set, and the test quenching parameter set.

[0046] It is clear that the test cylinder data set includes multiple test cylinder data sets, and each test cylinder data set includes the test cylinder mass and test quenching parameter set.

[0047] In detail, the construction of the test cylinder data set based on the central index parameter set, the test cylinder quality set, and the test quenching parameter set includes: Extract the mass of the test cylinders sequentially from the test cylinder mass group, and identify the target test cylinder corresponding to the mass of the test cylinder. The target quenching parameter set corresponding to the target test cylinder is determined in the test quenching parameter set set; The target quenching parameter set is normalized using the central index parameter set to obtain the normalized quenching parameter set, and the experimental quenching vector is constructed based on the normalized quenching parameter set. The test quenching vector and the test cylinder mass are paired by key values ​​to obtain the test cylinder data; The test cylinder data is summarized to obtain the test cylinder data set.

[0048] It is clear that the target test cylinder refers to the test cylinder corresponding to the mass of the test cylinder. The target quenching parameter group refers to the test quenching parameter group corresponding to the target test cylinder. The normalized quenching parameter group refers to the target quenching parameter group after normalization. The normalization method is as follows: extract the target quenching parameters sequentially from the target quenching parameter group, and identify the target index parameters corresponding to the target quenching parameters in the central index parameter set. The target index parameters correspond to the same quenching index as the target quenching parameters. Then, calculate the normalized quenching parameters based on the target quenching parameters and the target index parameters. The normalized quenching parameters are expressed as: Normalized quenching parameter = Target quenching parameter / Target index parameter. Summarize the normalized quenching parameters corresponding to each target quenching parameter to obtain the normalized quenching parameter group. The test quenching vector refers to the vector composed of each normalized quenching parameter in the normalized quenching parameter group. The vector elements in the test quenching vector correspond one-to-one with the normalized quenching parameters in the normalized quenching parameter group. The key-value pairing refers to using the test quenching vector as the key and the test cylinder mass as the value to form a key-value pair between the test quenching vector and the test cylinder mass. This key-value pair is the test cylinder data.

[0049] Furthermore, the purpose of the above normalization is as follows: since the dimensions of each target quenching parameter in the target quenching parameter group are different (temperature and time), and different dimensions will increase the computational load of subsequent particle swarm optimization algorithm iterations, thereby reducing efficiency, the target quenching parameter group is normalized here.

[0050] S6. Based on the test cylinder data set, optimize the quenching parameters to obtain the optimal quenching parameter set, which includes: optimal preheating temperature, optimal preheating time, optimal austenite temperature, optimal austenite holding time, optimal quenching temperature, and optimal quenching holding time.

[0051] It is clear that the optimal quenching parameter set refers to the quenching parameter set obtained after optimization. Performing staged quenching according to this optimal quenching parameter set ensures the best quality of the hydraulic cylinder while maintaining the total staged quenching time within a controllable range. The optimal preheating temperature, optimal preheating time, optimal austenite temperature, optimal austenite holding time, optimal quenching temperature, and optimal quenching holding time refer respectively to the experimental preheating temperature, experimental preheating time, experimental austenite temperature, experimental austenite holding time, experimental quenching temperature, and experimental quenching holding time within the optimal quenching parameter set.

[0052] In detail, the optimization of quenching parameters based on the experimental cylinder data set to obtain the optimal quenching parameter set includes: The pre-constructed particle swarm is initialized based on the experimental cylinder data set to obtain an initial particle swarm, which includes multiple particles, and the position of each particle corresponds to the experimental quenching vector in the experimental cylinder data. The optimal population position is obtained by iterating using the initial particle swarm, and the optimal quenching vector is determined based on the optimal population position. Based on the optimal quenching vector and the set of central index parameters, the optimal quenching parameter set is calculated.

[0053] It should be explained that the particle swarm refers to an optimization algorithm based on swarm intelligence, which iteratively searches for the optimal solution by simulating the foraging behavior of a flock of birds. Initialization refers to initializing the position, velocity, and fitness of each particle in the particle swarm. The initial particle swarm refers to the particle swarm after initialization. The optimal population position refers to the position of the particle with the highest fitness during the iteration process, and the optimal quenching vector refers to the solution corresponding to the optimal population position. Since the optimal quenching vector is a normalized vector, it is also necessary to transform the optimal quenching vector into an optimal quenching parameter set based on the central index parameter set. The optimal quenching parameter set is calculated by multiplying the central index parameter in the central index parameter set with the vector element corresponding to the optimal quenching vector. Each optimal quenching parameter corresponds to a central index parameter and a vector element in the optimal quenching vector.

[0054] Specifically, the initialization of the pre-constructed particle swarm based on the experimental cylinder data set to obtain the initial particle swarm includes: Construct particle constraints, which include multiple index ranges; Particles are extracted sequentially from the particle swarm, and their initial positions and velocities are generated based on the particle constraints. Identify the initial quenching vector corresponding to the initial position; Based on the initial quenching vector and the test cylinder data set, the cylinder quality is predicted, and the predicted cylinder quality is obtained. Identify the duration parameter group in the initial quenching vector, and set the efficiency suppression value according to the duration parameter group. The efficiency suppression value is the sum of all duration parameters in the duration parameter group. Calculate the initial fitness based on the efficiency suppression value and the predicted cylinder mass; Based on the initial position, initial velocity, and initial fitness, initial particles are generated, and the initial particles are aggregated to obtain an initial particle swarm.

[0055] It should be explained that the particle constraint condition refers to the range of particle positions generated during the iteration process. The particle constraint condition comprises multiple index ranges, each of which is a constraint condition for a vector element of the solution vector corresponding to the particle position. The initial position and initial velocity refer to the initial particle position and particle velocity, respectively, generated using a random function. The initial quenching vector refers to the vector corresponding to the initial position. The predicted cylinder mass refers to the experimental cylinder mass generated according to the initial quenching vector. The duration parameter group includes multiple duration parameters, which are duration-related parameters. These duration parameters include: initial preheating duration, initial austenite holding duration, and initial quenching holding duration. The normalized values ​​corresponding to the preheating duration, austenite holding duration, and quenching holding duration are also specified. In staged quenching, longer holding times lead to longer overall quenching times, thus reducing the efficiency of cylinder fabrication. Therefore, this solution introduces an efficiency suppression value, which is used to suppress the growth of time-related parameters in fitness. The initial fitness refers to the fitness value of the initial particles, expressed as: ,in, Indicates the initial fitness. This represents the preset quality weighting coefficient. This represents the preset efficiency weighting coefficient. The value represents the efficiency suppression value, where the mass weight coefficient and efficiency weight coefficient represent the importance of predicting the cylinder mass and efficiency suppression value, respectively. Optionally, the mass weight coefficient and efficiency weight coefficient are set to 0.6 and 0.4, respectively.

[0056] In detail, the step of predicting the cylinder mass based on the initial quenching vector and the test cylinder data set, to obtain the predicted cylinder mass, includes: Extract the test cylinder data sequentially from the test cylinder data group, and calculate the test quality weight based on the test quenching vector and the initial quenching vector in the test cylinder data. The test quality weights corresponding to the test cylinder data in the test cylinder data group are summarized to obtain the test quality weight reorganization; Based on the weighted reorganization of test quality and the test cylinder data set, the predicted cylinder quality is calculated.

[0057] It should be explained that the test quality weight refers to the numerical value that quantifies the importance of the test cylinder quality in the test cylinder data when calculating the predicted cylinder quality. The larger the test quality weight, the greater the importance of the test cylinder quality in the test cylinder data when calculating the predicted cylinder quality. The test quality weight is calculated as follows: ; in, Indicates the test quality weight. This represents an exponential function with the natural constant as its base. This represents the initial quenching vector. This represents the test quenching vector in the test cylinder data. This represents the vector dimension of the initial quenching vector.

[0058] Furthermore, since it is impossible to test the cylinder quality of the quenching vector corresponding to the particle position during the particle swarm optimization process, the cylinder quality corresponding to each particle position (i.e., the predicted cylinder quality) is determined through an attention mechanism (calculating the test quality weight) and a set of test cylinder data. The calculation method for the predicted cylinder quality is as follows: ; in, This indicates a prediction of the cylinder's mass. This indicates the number of test quality weights in the test quality weighting reorganization or the number of test cylinder data in the test cylinder data group. Indicating the first in the reorganization of test quality weights Each test quality weight, This indicates the first data set in the test cylinder data group. The test cylinder mass corresponding to the data of each test cylinder.

[0059] S7. Perform graded quenching on the pre-acquired original mold according to the optimal quenching parameter set to obtain the target oil cylinder, wherein the target oil cylinder includes: target cylinder body and target cylinder head.

[0060] It is clear that the original mold refers to the mold that needs to undergo graded quenching, and the method of obtaining the original mold is the same as that of the test cylinder mold. The target cylinder refers to the original mold after graded quenching, wherein the graded quenching method is the same as that of the test cylinder mold, and will not be described again here. The target cylinder body and target cylinder head refer to the cylinder body and cylinder head of the target cylinder, respectively.

[0061] S8. Based on the target hydraulic cylinder, complete the preparation of the aluminum alloy hydraulic cylinder body and cylinder head.

[0062] Importantly, once the target cylinder is prepared, its quality can be tested to obtain its target cylinder quality. The target cylinder quality and the optimal quenching parameter set can then be added to the test cylinder data set, thereby further enriching the diversity of the test cylinder data set.

[0063] To address the problems described in the background section, this invention first obtains a set of experimental quenching parameters and a set of core index parameters. This provides rich and systematic foundational data for subsequent optimization and selection of quenching parameters, facilitating in-depth research into the influence of different quenching parameters on cylinder performance. Next, based on the experimental quenching parameter set, the experimental cylinder mold group undergoes graded quenching to obtain an experimental cylinder group. This step, through graded quenching of the experimental cylinder molds, simulates the quenching process in actual production. The application of different quenching parameter sets yields experimental cylinders with varying performance, providing diverse samples for studying the relationship between quenching parameters and cylinder quality. This helps in discovering the optimal combination of quenching process parameters, thereby improving the dimensional stability and mechanical properties of the cylinder. Furthermore, each experimental cylinder in the experimental cylinder group undergoes quality testing to obtain an experimental cylinder quality group. This step quantitatively evaluates the quality of each experimental cylinder by testing indicators such as tensile strength, corrosion resistance, and dimensional compliance. This provides precise data support for subsequent analysis of the impact of quenching parameters on cylinder quality. Then, based on the central index parameter set, the experimental cylinder quality set, and the experimental quenching parameter set, an experimental cylinder data set is constructed. This step integrates the quenching parameters with the corresponding quality inspection results to form a systematic experimental cylinder data set. This not only facilitates unified management and analysis of experimental data but also provides a standardized and effective data foundation for subsequent optimization of quenching parameters using optimization algorithms, improving data usability and the reliability of the optimization process. Finally, based on the experimental cylinder data set, quenching parameters are optimized to obtain the optimal quenching parameter set. This step, through intelligent optimization methods such as particle swarm optimization, can efficiently search for the optimal combination of quenching parameters from a large amount of experimental data. The optimized quenching parameters can ensure optimal cylinder quality while reasonably controlling the total time of staged quenching, further improving the intelligence of cylinder manufacturing and effectively enhancing production efficiency and product quality. Therefore, this invention can improve the intelligence level of the cylinder manufacturing process and enhance the stability of the cylinder body and cylinder head.

[0064] like Figure 2 The diagram shown is a functional block diagram of a manufacturing system for an aluminum alloy hydraulic cylinder body and cylinder head provided in an embodiment of the present invention.

[0065] The aluminum alloy cylinder body and cylinder head fabrication system 100 of the present invention can be installed in the electronic device 1. Depending on the functions implemented, the aluminum alloy cylinder body and cylinder head fabrication system 100 may include a quenching parameter acquisition module 101, a cylinder quality inspection module 102, an optimal parameter optimization module 103, and a target cylinder fabrication module 104. The module described in this invention can also be called a unit, referring to a series of computer program segments that can be executed by the electronic device processor 10 and perform a fixed function, stored in the memory 11 of the electronic device 1.

[0066] The quenching parameter acquisition module 101 is used to receive the cylinder preparation instruction, determine the mold size parameter group based on the cylinder preparation instruction, prepare the test cylinder mold group according to the mold size parameter group, and acquire the test quenching parameter group set and the central index parameter set, wherein the test cylinder molds in the test cylinder mold group are all the same. The cylinder quality inspection module 102 is used to perform graded quenching on the test cylinder mold group based on the test quenching parameter set to obtain the test cylinder group. The test quenching parameter set in the test quenching parameter set corresponds one-to-one with the test cylinder mold in the test cylinder mold group. The quality inspection is performed on each test cylinder in the test cylinder group to obtain the test cylinder quality group. The optimal parameter optimization module 103 is used to construct a test cylinder data set based on the central index parameter set, the test cylinder mass set, and the test quenching parameter set. Based on the test cylinder data set, the quenching parameters are optimized to obtain the optimal quenching parameter set. The optimal quenching parameter set includes: optimal preheating temperature, optimal preheating time, optimal austenite temperature, optimal austenite holding time, optimal quenching temperature, and optimal quenching holding time. The target cylinder preparation module 104 is used to perform graded quenching on the pre-acquired original mold according to the optimal quenching parameter set to obtain the target cylinder, wherein the target cylinder includes: target cylinder body and target cylinder head.

[0067] In detail, the modules in the aluminum alloy cylinder block and cylinder head fabrication system 100 described in this embodiment of the invention employ the same methods as described above during use. Figure 1 The same technical means are used to prepare the aluminum alloy cylinder body and cylinder head as described above, and the same technical effect can be achieved, so it will not be repeated here.

[0068] like Figure 3 The diagram shown is a schematic diagram of the structure of an electronic device 1 for implementing a method for preparing an aluminum alloy hydraulic cylinder block and cylinder head according to an embodiment of the present invention.

[0069] The electronic device 1 may include a processor 10, a memory 11 and a bus 12, and may also include a computer program stored in the memory 11 and executable on the processor 10, such as a method program for preparing an aluminum alloy cylinder block and cylinder head.

[0070] The memory 11 includes at least one type of readable storage medium, including flash memory, portable hard drive, multimedia card, card-type memory (e.g., SD or DX memory), magnetic memory, magnetic disk, optical disk, etc. In some embodiments, the memory 11 can be an internal storage unit of the electronic device 1, such as the portable hard drive of the electronic device 1. In other embodiments, the memory 11 can be an external storage device of the electronic device 1, such as a plug-in portable hard drive, smart media card (SMC), secure digital card (SD), flash card, etc., equipped on the electronic device 1. Furthermore, the memory 11 includes both internal storage units and external storage devices of the electronic device 1. The memory 11 can be used not only to store application software and various types of data installed on the electronic device 1, such as the code of the manufacturing method program for aluminum alloy cylinder block and cylinder head, but also to temporarily store data that has been output or will be output.

[0071] In some embodiments, the processor 10 may be composed of integrated circuits, such as a single packaged integrated circuit or multiple integrated circuits with the same or different functions, including combinations of one or more central processing units (CPUs), microprocessors, digital processing chips, graphics processors, and various control chips. The processor 10 is the control unit of the electronic device 1, connecting various components of the electronic device 1 via various interfaces and lines. It executes programs or modules stored in the memory 11 (e.g., a method for manufacturing an aluminum alloy hydraulic cylinder body and cylinder head) and calls data stored in the memory 11 to perform various functions and process data in the electronic device 1.

[0072] The bus 12 can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The bus 12 can be divided into an address bus, a data bus, a control bus, etc. The bus 12 is configured to realize the connection and communication between the memory 11 and at least one processor 10, etc.

[0073] Figure 3 Only electronic device 1 with components is shown; those skilled in the art will understand that... Figure 3 The structure shown does not constitute a limitation on the electronic device 1, and may include fewer or more components than shown, or combine certain components, or have different component arrangements.

[0074] For example, although not shown, the electronic device 1 may also include a power supply (such as a battery) to power the various components. Preferably, the power supply can be logically connected to the at least one processor 10 through a power management system, thereby enabling functions such as charging management, discharging management, and power consumption management through the power management system. The power supply may also include one or more DC or AC power supplies, recharging systems, power fault detection circuits, power converters or inverters, power status indicators, and other arbitrary components. The electronic device 1 may also include various sensors, Bluetooth modules, Wi-Fi modules, etc., which will not be described in detail here.

[0075] Furthermore, the electronic device 1 may also include a network interface. Optionally, the network interface may include a wired interface and / or a wireless interface (such as a Wi-Fi interface, a Bluetooth interface, etc.), which is typically used to establish communication connections between the electronic device 1 and other electronic devices.

[0076] Optionally, the electronic device 1 may further include a user interface, which may be a display, an input unit (such as a keyboard), and optionally, a standard wired interface or a wireless interface. Optionally, in some embodiments, the display may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, or an OLED (Organic Light-Emitting Diode) touchscreen, etc. The display may also be appropriately referred to as a screen or display unit, used to display information processed in the electronic device 1 and to display a visual user interface.

[0077] The manufacturing method program for the aluminum alloy hydraulic cylinder body and cylinder head stored in the memory 11 of the electronic device 1 is a combination of multiple instructions. When run in the processor 10, it can achieve the following: Receive the hydraulic cylinder preparation instruction and determine the mold size parameter set based on the hydraulic cylinder preparation instruction; Based on the mold size parameter set, prepare the test hydraulic cylinder mold set, and obtain the test quenching parameter set and the central index parameter set. Among them, the test hydraulic cylinder molds in the test hydraulic cylinder mold set are all the same. Based on the experimental quenching parameter set, the experimental cylinder mold set is subjected to graded quenching to obtain the experimental cylinder set. The experimental quenching parameter set in the experimental quenching parameter set corresponds one-to-one with the experimental cylinder mold in the experimental cylinder mold set. Each test cylinder in the test cylinder group is subjected to quality inspection to obtain the test cylinder quality group; The test cylinder data set is constructed based on the central index parameter set, the test cylinder quality set, and the test quenching parameter set. Based on the experimental cylinder data set, the quenching parameters were optimized to obtain the optimal quenching parameter set, which includes: optimal preheating temperature, optimal preheating time, optimal austenite temperature, optimal austenite holding time, optimal quenching temperature, and optimal quenching holding time. The original mold is subjected to graded quenching according to the optimal quenching parameter set to obtain the target hydraulic cylinder, which includes: target cylinder body and target cylinder head; Based on the target hydraulic cylinder, the aluminum alloy hydraulic cylinder body and cylinder head were fabricated.

[0078] Specifically, the processor 10's implementation method for the above instructions can be found in [reference needed]. Figures 1 to 3 The descriptions of the relevant steps in the corresponding embodiments are not repeated here.

[0079] Furthermore, if the modules / units integrated in the electronic device 1 are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. The computer-readable storage medium can be volatile or non-volatile. For example, the computer-readable medium may include: any entity or system capable of carrying the computer program code, a recording medium, a USB flash drive, a portable hard drive, a magnetic disk, an optical disk, a computer memory, or a read-only memory (ROM).

[0080] The present invention also provides a computer-readable storage medium storing a computer program, which, when executed by a processor 10 of an electronic device 1, can perform the following: Receive the hydraulic cylinder preparation instruction and determine the mold size parameter set based on the hydraulic cylinder preparation instruction; Based on the mold size parameter set, prepare the test hydraulic cylinder mold set, and obtain the test quenching parameter set and the central index parameter set. Among them, the test hydraulic cylinder molds in the test hydraulic cylinder mold set are all the same. Based on the experimental quenching parameter set, the experimental cylinder mold set is subjected to graded quenching to obtain the experimental cylinder set. The experimental quenching parameter set in the experimental quenching parameter set corresponds one-to-one with the experimental cylinder mold in the experimental cylinder mold set. Each test cylinder in the test cylinder group is subjected to quality inspection to obtain the test cylinder quality group; The test cylinder data set is constructed based on the central index parameter set, the test cylinder quality set, and the test quenching parameter set. Based on the experimental cylinder data set, the quenching parameters were optimized to obtain the optimal quenching parameter set, which includes: optimal preheating temperature, optimal preheating time, optimal austenite temperature, optimal austenite holding time, optimal quenching temperature, and optimal quenching holding time. The original mold is subjected to graded quenching according to the optimal quenching parameter set to obtain the target hydraulic cylinder, which includes: target cylinder body and target cylinder head; Based on the target hydraulic cylinder, the aluminum alloy hydraulic cylinder body and cylinder head were fabricated.

[0081] In the embodiments provided by this invention, it should be understood that the disclosed devices, systems, and methods can be implemented in other ways. For example, the system embodiments described above are merely illustrative, and actual implementations may have other classification methods.

[0082] The modules described as separate components may or may not be physically separate. The components shown as modules may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0083] Furthermore, the functional modules in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or in the form of hardware plus software functional modules.

[0084] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A method for preparing an aluminum alloy hydraulic cylinder body and cylinder head, characterized in that, The method includes: Receive the hydraulic cylinder preparation instruction and determine the mold size parameter set based on the hydraulic cylinder preparation instruction; Based on the mold size parameter set, prepare the test hydraulic cylinder mold set, and obtain the test quenching parameter set and the central index parameter set. Among them, the test hydraulic cylinder molds in the test hydraulic cylinder mold set are all the same. Based on the experimental quenching parameter set, the experimental cylinder mold set is subjected to graded quenching to obtain the experimental cylinder set. The experimental quenching parameter set in the experimental quenching parameter set corresponds one-to-one with the experimental cylinder mold in the experimental cylinder mold set. Each test cylinder in the test cylinder group was subjected to quality inspection to obtain the test cylinder quality group; The test cylinder data set is constructed based on the central index parameter set, the test cylinder quality set, and the test quenching parameter set. Based on the experimental cylinder data set, the quenching parameters were optimized to obtain the optimal quenching parameter set, which includes: optimal preheating temperature, optimal preheating time, optimal austenite temperature, optimal austenite holding time, optimal quenching temperature, and optimal quenching holding time. The original mold is subjected to graded quenching according to the optimal quenching parameter set to obtain the target hydraulic cylinder, which includes: target cylinder body and target cylinder head; Based on the target hydraulic cylinder, the aluminum alloy hydraulic cylinder body and cylinder head were fabricated.

2. The method for preparing the aluminum alloy cylinder block and cylinder head as described in claim 1, characterized in that, The acquisition of the test quenching parameter set and the central index parameter set includes: Set a set of quenching indices, which includes multiple quenching indices, and the quenching indices are preheating temperature indices, preheating time indices, austenite temperature indices, austenite holding time indices, quenching temperature indices, or quenching holding time indices. Quenching indices are extracted sequentially from the set of quenching indices, and an index range is constructed based on the quenching indices. The central index parameter of the index range is then determined. The index range is divided according to the preset number of tests to obtain a candidate quenching parameter group; The candidate quenching parameter groups and the central index parameters are summarized respectively to obtain the candidate quenching parameter group set and the central index parameter set; The candidate quenching parameter set is assigned parameters to obtain the test quenching parameter set. The test quenching parameter set includes multiple test quenching parameter sets, and each test quenching parameter set includes multiple candidate quenching parameters. The candidate quenching parameters correspond one-to-one with the quenching indices in the quenching index set.

3. The method for preparing the aluminum alloy cylinder body and cylinder head as described in claim 2, characterized in that, The test hydraulic cylinder mold group is subjected to graded quenching based on the test quenching parameter set to obtain the test hydraulic cylinder group, including: The first hydraulic cylinder mold is extracted from the test hydraulic cylinder mold group, and the first quenching parameter group is extracted from the test quenching parameter group. The first quenching parameter group includes: test preheating temperature, test preheating time, test austenite temperature, test austenite holding time, test quenching temperature and test quenching holding time. Based on the first set of quenching parameters, the first cylinder mold is subjected to graded quenching to obtain the test cylinder; The first hydraulic cylinder mold is removed from the test hydraulic cylinder mold set to obtain the removed hydraulic cylinder mold set. The first quenching parameter set is removed from the test quenching parameter set to obtain the removed quenching parameter set. The rejected cylinder mold set and the rejected quenching parameter set are respectively used as the test cylinder mold set and the test quenching parameter set, and the step of extracting the first cylinder mold in the test cylinder mold set is returned until the rejected cylinder mold set or the rejected quenching parameter set is empty. By combining the tested hydraulic cylinders, a set of tested hydraulic cylinders is obtained.

4. The method for preparing the aluminum alloy cylinder body and cylinder head as described in claim 3, characterized in that, The process of performing graded quenching on the first hydraulic cylinder mold according to the first quenching parameter set to obtain the test hydraulic cylinder includes: Based on the test preheating temperature and test preheating time in the first quenching parameter group, and using the pre-constructed preheating furnace to preheat the first cylinder mold, a preheated cylinder mold is obtained. Based on the test quenching temperature in the first quenching parameter group, the pre-acquired original graded quenching medium is heated to obtain the target graded quenching medium. The preheated cylinder mold is transferred to the pre-constructed quenching furnace to obtain the initial quenching mold. The quenching furnace is heated, and the real-time quenching temperature of the initial quenching mold is monitored. Once the real-time quenching temperature reaches the test austenite temperature in the first quenching parameter group, the initial quenching mold is kept warm based on the test austenite holding time in the first quenching parameter group to obtain the austenite cylinder mold. The austenitic cylinder mold is transferred to the target graded quenching medium, and the austenitic cylinder mold is kept at a constant temperature based on the target graded quenching medium and the test quenching holding time in the first and second quenching parameter group to obtain the quenched cylinder mold. The quenched oil cylinder mold was cooled to obtain the test oil cylinder.

5. The method for preparing the aluminum alloy cylinder block and cylinder head as described in claim 4, characterized in that, The quality inspection of each test cylinder in the test cylinder group is performed to obtain the test cylinder quality group, including: The test cylinders were extracted sequentially from the test cylinder group; The test cylinder was subjected to quality analysis to obtain a set of cylinder quality parameters, which included: cylinder tensile strength, cylinder corrosion resistance, and cylinder dimensional qualification values. The hydraulic cylinder mass is evaluated based on the hydraulic cylinder mass parameter set to obtain the test hydraulic cylinder mass, which is between 0 and 1. The mass of the test cylinders is summarized to obtain the mass group of the test cylinders.

6. The method for preparing the aluminum alloy cylinder block and cylinder head as described in claim 5, characterized in that, The construction of the test cylinder data set based on the central index parameter set, the test cylinder quality set, and the test quenching parameter set includes: Extract the mass of the test cylinders sequentially from the test cylinder mass group, and identify the target test cylinder corresponding to the mass of the test cylinder; The target quenching parameter set corresponding to the target test cylinder is determined in the test quenching parameter set set; The target quenching parameter set is normalized using the central index parameter set to obtain the normalized quenching parameter set, and the experimental quenching vector is constructed based on the normalized quenching parameter set. The test quenching vector and the test cylinder mass are paired by key values ​​to obtain the test cylinder data; The test cylinder data is compiled to obtain the test cylinder data set.

7. The method for preparing the aluminum alloy cylinder block and cylinder head as described in claim 6, characterized in that, The step of optimizing quenching parameters based on the experimental cylinder data set to obtain the optimal quenching parameter set includes: The pre-constructed particle swarm is initialized based on the experimental cylinder data set to obtain an initial particle swarm, which includes multiple particles, and the position of each particle corresponds to the experimental quenching vector in the experimental cylinder data. The optimal population position is obtained by iterating using the initial particle swarm, and the optimal quenching vector is determined based on the optimal population position. Based on the optimal quenching vector and the set of central index parameters, the optimal quenching parameter set is calculated.

8. The method for preparing the aluminum alloy cylinder block and cylinder head as described in claim 7, characterized in that, The initial particle swarm is obtained by initializing the pre-constructed particle swarm based on the experimental cylinder data set, including: Construct particle constraints, which include multiple index ranges; Particles are extracted sequentially from the particle swarm, and their initial positions and velocities are generated based on the particle constraints. Identify the initial quenching vector corresponding to the initial position; Based on the initial quenching vector and the test cylinder data set, the cylinder quality is predicted, and the predicted cylinder quality is obtained. Identify the duration parameter group in the initial quenching vector, and set the efficiency suppression value according to the duration parameter group. The efficiency suppression value is the sum of all duration parameters in the duration parameter group. Calculate the initial fitness based on the efficiency suppression value and the predicted cylinder mass; Based on the initial position, initial velocity, and initial fitness, initial particles are generated, and the initial particles are aggregated to obtain the initial particle swarm.

9. The method for preparing the aluminum alloy cylinder block and cylinder head as described in claim 8, characterized in that, The step of predicting the cylinder mass based on the initial quenching vector and the test cylinder data set, to obtain the predicted cylinder mass, includes: Extract the test cylinder data sequentially from the test cylinder data group, and calculate the test quality weight based on the test quenching vector and the initial quenching vector in the test cylinder data. The test quality weights corresponding to the test cylinder data in the test cylinder data group are summarized to obtain the test quality weight reorganization; Based on the weighted reorganization of test quality and the test cylinder data set, the predicted cylinder quality is calculated.

10. A manufacturing system for an aluminum alloy hydraulic cylinder body and cylinder head, characterized in that, The system includes: The quenching parameter acquisition module is used to receive the cylinder preparation instruction, determine the mold size parameter set based on the cylinder preparation instruction, prepare the test cylinder mold set according to the mold size parameter set, and acquire the test quenching parameter set and the central index parameter set. Among them, the test cylinder molds in the test cylinder mold set are all the same. The hydraulic cylinder quality inspection module is used to perform graded quenching on the test hydraulic cylinder mold group based on the test quenching parameter set to obtain the test hydraulic cylinder group. The test quenching parameter set in the test quenching parameter set corresponds one-to-one with the test hydraulic cylinder mold in the test hydraulic cylinder mold group. The quality inspection is performed on each test hydraulic cylinder in the test hydraulic cylinder group to obtain the test hydraulic cylinder quality group. The optimal parameter optimization module is used to construct a test cylinder data set based on the central index parameter set, the test cylinder mass set, and the test quenching parameter set. Based on the test cylinder data set, the quenching parameters are optimized to obtain the optimal quenching parameter set. The optimal quenching parameter set includes: optimal preheating temperature, optimal preheating time, optimal austenite temperature, optimal austenite holding time, optimal quenching temperature, and optimal quenching holding time. The target cylinder preparation module is used to perform graded quenching on the pre-acquired original mold according to the optimal quenching parameter set to obtain the target cylinder, wherein the target cylinder includes: target cylinder body and target cylinder head.

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